Status of Environmental Studies Draft Studies Completed* Studies - - PowerPoint PPT Presentation

Status of Environmental Studies

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*Note: Completed means a draft report has been submitted to SFCTA for review.

Draft Studies Completed* Studies Underway

• Tree Study Report
• Hazardous Materials Phase I Initial

Site Assessment

• Hydrology/Water Quality
• Cultural Resources: Archeology
• Biological Resources
• Cultural Resources: Historic

Architecture

• Air Quality and Energy Study
• Noise Study
• Community Impact Analysis
• Section 4(f)
• Transportation

Environmental Studies - Timeline

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Note: Months reflect timeframe when a draft report is submitted to SFCTA for review.

2013 2014

Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Hazardous Waste Geology/Soils Historic Architecture Section 4(f) Admin Draft EIR/EIS Draft EIR/EIS Final EIR/EIS Hydrology Floodplains Visual Impact Analysis Transportation Water Quality Noise Biological Resources Energy Archaeology Air Quality/ Greenhouse Gas Emissions Community Impacts

Hazardous Materials Study: Purpose

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1. Identify and rank the level of risk associated with hazardous materials, hazardous waste, and/or contamination at the Project study area that could potentially affect proposed construction activities and/or operations 2. Identify potential sources of contamination in the study area as Recognized Environmental Conditions (“RECs”) as defined in the American Society of Testing and Materials (“ASTM”) Method E1527-05, Standard Practice for Environmental Site Assessments: Phase I Environmental Assessment Process.

Hazardous Materials Study: Methodology

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4 Conduct Initial Site Assessment of areas within 1/8 mile of the project corridor

• 1. Review physical setting
• 2. Review historical land use data
• 3. Review regulatory agency online files and databases
• 4. Conduct site reconnaissance of current land uses
• 5. Prepare the Initial Site Assessment to document findings, conclusions,

and recommendations

Hazardous Materials Study: Findings

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• 1. Reported HazMat Releases

with effects to groundwater

• 3675 Geary Boulevard
• 450 Mission Street
• 2130 O’Farrell Street
• 2. Other Environmental Concerns
• Aerially-deposited lead (“ADL”)
• Historical fill materials
• Naturally-occurring asbestos
• Lead and asbestos in structural

materials

3675 Geary Blvd

Hazardous Materials: Recommendations

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6 Preliminary Site Investigation

Soil investigation Soil investigation

• Aerially-Deposited Lead: Collect representative samples of exposed shallow

soils within 30 feet of the edge of the roadway and analyzed for total lead and soluble lead.

• Naturally-occurring Asbestos: Collect representative samples of soils in areas

where serpentinite bedrock is present

Groundwater Groundwater

• Collect groundwater near reported hazardous materials release sites
• Analyze samples for Total Petroleum Hydrocarbons and volatile organic

compounds if project excavations may extend into the groundwater in those areas

Hydrology/ Water Quality: Purpose/ Methodology

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• 1. Identify potential effects to surface water features and groundwater supply

and water quality in compliance with:

 Clean Water Act  Porter-Cologne Water Quality Control Act  Water Quality Control Plan for the San Francisco Bay Region  San Francisco policies and regulations concerning water quality and stormwater runoff

• 2. Review hydrologic data from federal, state and local agencies
• 3. Review relevant regional and local policies concerning water quality

Hydrology/ Water Quality: Findings

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• Flooding Hazards
• Increase flow to a specific area of the City Combined Sewer System
• Implementation of required stormwater retention and treatment features would

result in beneficial, impacts to storm drainage

• Implementation of a Storm Water Pollution Prevention Plan (SWPPP) during

construction would minimize potential impacts to water quality

• No impacts to groundwater supply

Archaeology Study: Purpose

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• Comply with Section 106 of the National Historic Preservation Act
• Identify historic properties that could be affected
• Assess project effects to historic properties
• Seek methods to avoid, minimize, or mitigate adverse effects to historic properties
• Comply with California Public Resource Code Section 5024.1
• Identify historic properties per California Register of Historic Resources
• California Historical Landmarks
• Locally designated city or county landmarks

Archaeology Study: Methodology

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1. Identify Archaeological Area of Potential Effects 2. Search California Native American Heritage Commission Sacred Lands files 3. Search California Historical Resources Information System files 4. Determine areas of low, moderate and high sensitivity for the discovery of buried historic and pre-historic sites 5. Filter areas of sensitivity to those areas where excavation would go below the roadway surface and roadbed

Archaeology Study: Findings/ Recommendations

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• No known eligible historic or pre-historic

archaeological resources identified within the APE

• Additional efforts pursuant to concurrence from the

State Historic Preservation Office (SHPO)

• Areas requiring excavations below the roadbed

(~3 feet) with a high sensitivity for buried resources may require:

a. Historic coring in some areas of high sensitivity b. Historic archival research c. Based on coring and archival research, additional evaluation and mitigation may be needed